Consumers Speak: Tuned In, Ticked Off

TV companies and Internet service providers top the list of most hated.

Consumers loathe companies like airlines and health insurers for their ability to turn straightforward tasks into time-devouring nightmares. But two industries top them all—even the U.S. Post Office—when it comes to driving customers insane: cable and Internet providers.

That's what the American Customer Satisfaction Index concluded about the two industries, whose companies overlap. ACSI,...